codeigniter - Paypal 折扣无法使其发挥作用

Question

我正在尝试使用 PayPal + Codeigniter 为整个购物车设置折扣，我在没有折扣的情况下完成了这项工作。

据我所知，我唯一需要做的就是设置一个隐藏字段discount_amount_cart，如我所见here

这是我的表格:

<form method="post" action="https://www.sandbox.paypal.com/cgi-bin/webscr" name="paypal_form">
     <input type="hidden" name="rm" value="2" />
     <input type="hidden" name="cmd" value="_cart" />
     <input type="hidden" name="upload" value="1" />
     <input type="hidden" name="currency_code" value="EUR" />
     <input type="hidden" name="business" value="biz_1271300483_biz@xxxx.xx" />
     <input type="hidden" name="return" value="http://xxxxxx.com/website/pt/paypal/success/8/4c237a03897e0" />
     <input type="hidden" name="cancel_return" value="http://xxxxxxx.com/website/pt/paypal/cancel/8/4c237a03897e0" />
     <input type="hidden" name="notify_url" value="http://xxxxxx.com/website/pt/paypal/ipn" />
     <input type="hidden" name="custom" value="" />
     <input type="hidden" name="no_shipping" value="1" />
     <input type="hidden" name="cpp_header_image" value="http://xxxxxxxxx.com/images/logo.png" />
     <input type="hidden" name="image_url" value="http://xxxxxxxxx.com/images/logo.png" />
     <input type="hidden" name="invoice" value="4c237a03897e0" />
     <input type="hidden" name="no_note" value="1" />
     <input type="hidden" name="discount_rate_cart" value="10.00" />
     <input type="hidden" name="first_name" value="Foo Bar" />
     <input type="hidden" name="city" value="xxxx" />
     <input type="hidden" name="address1" value="xxxxxx" />
     <input type="hidden" name="zip" value="xxxxxx" />
     <input type="hidden" name="lc" value="pt" />
     <input type="hidden" name="email" value="xxxxx@xxx.pt" />
     <input type="hidden" name="country" value="PT" />
     <input type="hidden" name="item_name_1" value="Cloud Hosting WIN Business 25GB" />
     <input type="hidden" name="item_number_1" value="200.00000003" />
     <input type="hidden" name="amount_1" value="156" />
     <input type="hidden" name="quantity_1" value="1" />
     <input type="hidden" name="tax_rate_1" value="20" />
     <p><input type="submit" name="pp_submit" value="Pagar" class="submit" /></p>
    </form>

但是当我“发布”字段时，折扣行不会出现，我是否需要在商家帐户中激活某些东西，我做错了吗？

干杯

Answer 1

明白了

来自 PayPal 文档:

When you use consolidated discount amounts, you should specify a consolidated tax value in tax_cart. If you do not specify a tax value and your profile specifies a tax rate, your profile tax rate is applied after the consolidated discount value is applied.

所以我需要使用 tax_cart 为购物车定义我的“全局”税额。